Door-opening device.



A. s FLOWERS. DOOR OPENING DEVICE.

APPLICATION FILED MAY 9. 1908.

Patented Sept. 14, 1909. 2 SHEETS-SHEET 1. f"! G. 2.

. Atlorney WITNESSES 0K AW A. S. FLOWERS.

DOOR OPENING DEVICE.

' APPLIOATION FILED MAY 9. 190a.

} Patented Sept. 14, 1909.

2 SHEETS-SHEET 2.

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WITNESSES @K /1( aw ADDISON. S. FLOWERS,-. OF MOUNT. IO/Y,- BENNSYLVANIA.

DOOR-OPENING DEVICE.

Specification of Letters Patent.

PatenteiLSept. 14, 1 909.

' Application. fi'led Mayra, 1968*.v Serial No; 431.,8574'2- To alt w liom it may concern:-

Beit' known that I, ADDIsoN S; FLOWERS,

citizen of United States, residing at Mount Joy, in the county of Lancaster and State of Pennsylvania, have invented certain new and useful Improvements in Door-Opening Devices, of which the following is a specification.

My invention relates to door openers, particularly applicable to outwardly opening exit doors of public buildings, amusement houses and the like, and the object thereof is to provide a door opening device embodying a bolt operating mechanism, and which upon the initial pressure exerted thereagainst, will operate to withdraw the door bolt or bolts, the subsequent pressure thereagainst serving to open the door.

Further objects and advantages of my present invention will appear in the course of the following description, in which reference is made to the accompanying drawings, forming a part of this specification, in which like numerals are used to designate like parts throughout the several figures, and in which,

Figure 1 is an elevation of an outwardly opening door, looking from the inside thereof, and illustrating my improved opening device attached thereto. Fig. 2 is a central vertical sectional view taken therethrough. Fig. 3 is a side elevation, partly in section, of my improved door opening device re moved and on an enlarged scale. Fig. 4 is a transverse sectional view taken therethrough on the line 4*l of Fig. 3. Fig. 5 is a central longitudinal sectional view taken through one of the bolt end sockets, and Fig. 6 is a perspective view of one of the bolt operating levers.

As herein shown, my invention is especially adapted for use in connection wit-h an outwardly opening exit door indicated at a in Figs. 1 and 2, provided with longitudinally movable bolts 6 slidably mounted in and adapted to project within openings in the door casing c, and sill (Z as shown in Fig. 2 to lock the said door. Thus to unlock the door necessitates the inward longitudinal movement of the said rods 7) after which the door may be pressed open. Therefore, in the practical embodiment of my invention, I provide a U-shaped bolt cage 2, adapted to be seated within a cut out portion upon the inner face of the door, and provided with openings therein to receive the inner ends of the bolts Z) therethrough and projecting slightly therein, forthe reception as herein shown; of socket pieces 3, having central bores f iirone end thereof adapted forthe receptioinof the inner ends of the" said bolts Z), sec-uredtliereinby= set screws 5', saidsocket pieces extending within the said cage 2; 'lhe cageQ. is provided" with angular-flanges (5 upon its ends, which flanges abut the flanged base T of a tubular outstanding casing 8, and are secured to the door by screws or bolts, passing also through said flanged base '7. \Vithin the outer end of the tubular casing 8, extends a circular plunger 9, which may be hollow, as herein shown, and which is provided with an exterior face plate 10 of substantially enlarged area and against which the pressure is applied to draw the bolts 6 inwardly. Secured .within the hollow plunger 9, and extending within the casing 8 therefrom, at diametrically opposite points, are a pair of connecting arms 11. Adjacent its inner end and its flanged base 7, the tubular casing 8 is provided with diametrically opposite slots through which a transverse pivot plate 12 projects and is supported by a bolt 1?) locked transversely through the said casing 8 at right angles to, and projecting through the said plate 12.

The inner projecting ends of the bolt end socket 3, are provided with transverse openings lat through which the reduced extending ends 15 of the bolt operating levers 16, project, said operating levers having angular extensions 17 upon their inner ends, pivoted to the opposite faces of the pivot plate 12 upon opposite sides of the supporting bolt 13 thereof, thus allowing the said o erating levers to be rocked upon their saic pivots designated at 18. When the plunger 9 is pressed inwardly, inasmuch as the inner end of its connecting arms 11 are pivotally se cured to the inner ends of said operating levers 16 within a reduced portion 19 thereof, opposite its pivot' 18.

In order to return the plunger 9 to its normal position, I provide the same with an elongated screw projecting centrally therethrough and within the casing 8, the said screw 20 having a coil spring 21 associated thereabout, and extending between said plunger and the transverse pivot plate 12.

Having fully described my inventidii: I claim:

A door opener comprising a casing, said casing consisting of a forward cylindrical portion and a rear rectangular portion, said cylindrical portion having a flange base, said rear. rectangular portion having a flange base adapted to coincide with the said base of the said cylindrical portion, a transverse plate secured diametrically within said cylindrical portion and adjacent the rear end thereof, a hollow cylindrical plunger provided with a suitable head, slidably mounted within said cylindrical portion, a screw passing centrally and longitudinally through said plunger and cylindrical portion of said casing, a spiral spring around said screw and abutting said plunger and said transverse strip, L shaped operating levers pivoted to said transverse strip near the center thereof, sliding locking 1 bolts,

passing through said rear portion of said,

casing and having central longitudinal slots adjacent the inner ends thereof adapted to loosely engage the extremities of said L shaped links, and pivotal connecting means between said plunger and said L shaped- 

